Fire-extinguishing compound.



UNITED STATES PATENT OFFICE.

EDWARD M. DAVIDSON, OF NEW YORK, N. Y.

mE-Ex'rmemsnme COMPOUND.

To all whom it may concern:

Be it known that I, EDWARD M. DAVIDSON, a citizen of the United States,and a resident of the-city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and Improved Fire-Extinguishing Compound, of which the following is a full, clear, andexact description.

This invention relates to certain improvements in I compounds adaptedforuse in extinguishing fires, and

to extinguish the flames of other burning substances. The compoundvolatilizes in performing its work,,and

as the rate at which it volatilizes increases with an in- SpecificationofLetters Patent. Application filed January 9,1901 Serial No. 351,449.

Patented Sept. 17, 1907.

' crease in temperatureyit becomes more efficient the hotter the fire.It produces no injurious effects upon the furniture, decorations,machinery, edibles'or other articles with which it would be normallybrought in contact, and after vaporizing it leaves no residue of anykind. 1 o

The compound does not solidify save at extremely low temperature, andrequires no attention or recharging until used. It may be readilystored-in air-tight bottles or other receptacles, and is climaticchanges.

Having thus described my invention, 1. claim as new and desire to secureby Letters Patent:

1. A composition of matter inciuding carbon tetrachlorid and carbondioxid.

2. A fire extinguishing compound consisting of carbon .tetrachloridhaving in solution carbon dioxid gas.

In testimony whereof I have signed my name to this specification .in thepresence of two subscribing witnesses. 4o

EDWARD M. DAVIDSON.

Witnesses:

CLAIR W. FAIRBANK, Evnnann B. MARSHALL.

